Continuity mistake: In the scene after Rae discovers being chained her top changes positions on her shoulder between the shots.
Continuity mistake: The marks on Rae's face change. When she is in the truck with Lazarus outside the stores, the marks on her face are almost gone. Just a few minutes later when she is talking to he mother the marks are worse.
Continuity mistake: At the beginning, when Ronnie leaves Rae, her shirt changes position on her left shoulder. The positions change back and forth between the shots.
Continuity mistake: The scar on Lazarus's shoulder changes many times in the film.
Revealing mistake: When Lazarus is performing in the bar, Rae takes a drink from an empty beer bottle twice.
Continuity mistake: When Lincoln shows up to Laz's house and Rae is hiding, she pulls the chain taught at one point. When she does, we see it pulled at the point on the radiator; the shot then cuts showing the entire radiator and the chain is now slack and in a small pile next to it.
Plot hole: A few days after deploying, Ronnie returns home due to being discharged from the National Guard because of his anxiety disorder. In reality, being medically discharged could take months or longer, depending on how long it takes the Army to decide on follow-up medical care and possible post-discharge disability compensation. If the Army suspects that he concealed an anxiety diagnosis before he enlisted, that could result in an additional investigation for possible fraudulent enlistment charges.
Answer: No, it's just a phrase they both blurt out when they are angry. However, for the audience watching (us), it foreshadows the similarities between Rae's and Lazarus' lives that makes them connect so well.
Twotall